2026 GMC Sierra AT4
GMC Sierra Details
Automatic
V8, 6.6L
Coastal Dune
4WD
Diesel
0 Miles
Jet Black w/Kalahari Accents
260541
1GT4UPEY8TF277123
2500
Leather
AT4
Estimated Payment
$0 / month
About This 2026 GMC Sierra
Vehicle Details
2026 GMC Sierra 2500 AT4 4WD with the robust 6.6L V8 Diesel - a heavy-duty pickup engineered for capability and comfort in Stephenville, TX. This AT4 trim pairs a powerful V8 diesel with a refined off-road package, delivering confident performance whether towing on the highway or tackling rough terrain. Exterior features include aggressive AT4 styling and rugged tires designed for durability, while the suspension and underbody protection enhance confidence off pavement. Inside, the cabin balances utility with modern technology. Stay connected with Apple CarPlay and Android Auto integration, and control audio functions easily through steering wheel audio controls. Safety systems such as lane departure warning provide an extra layer of awareness on long drives and worksites. Seating is crafted for support during extended drives, and practical storage solutions keep gear organized. Towing and hauling are simplified with heavy-duty components and engineered systems tailored to demanding tasks. The GMC Sierra 2500 AT4 includes advanced driver assistance features and a suite of convenience amenities that support both daily use and weekend adventures. Located in Stephenville, TX, this 2026 GMC Sierra 2500 AT4 4WD with the 6.6L V8 Diesel is ready to meet the needs of drivers who require serious capability, modern connectivity, and off-road readiness in a single, rugged package.
Equipment
See what's behind you with the back up camera on this model. An off-road package is equipped on this model. This model is equipped with the latest generation of XM/Sirius Radio. This 3/4 ton pickup features a hands-free Bluetooth phone system. This GMC Sierra offers Android Auto for seamless smartphone integration. Engulf yourself with the crystal clear sound of a BOSE sound system in this 3/4 ton pickup. Apple CarPlay: Seamless smartphone integration for it - stay connected and entertained on the go! The leather seats in the GMC Sierra are a must for buyers looking for comfort, durability, and style. This vehicle's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. It features steering wheel audio controls. It's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. Keep your hands warm all winter with a heated steering wheel in the GMC Sierra .
Packages
AT4 Premium Plus Package: Power Sunroof; Off-Road High Clearance Step; Technology Package; Power Sunroof; Technology Package; Power-Retractable Black Assist Steps. Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; 6.6L V8 with Direct Injection and Variable Valve Timing Engine; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Rear Wheelhouse Liners. AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote. Black Badging Package: Black Sierra Nameplates; Black GMC Emblems. 20" Aluminum High Gloss Black Wheels. Technology Package. Off-Road High Clearance Step. Power Sunroof. Body Color Wheel Arch Moldings. Wired Auxiliary Trailer Camera. Gooseneck/5th Wheel Prep Package. Coastal Dune. Hitch Package. Rear Underseat Storage. 3 Years SiriusXM. Cargo Tie-Down Rings (set of 4). LED Smoked Amber Roof Marker Lamps. Trailer Tire Pressure Monitor Sensors. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**
2026 GMC Sierra 2500 AT4 4WD with the robust 6.6L V8 Diesel - a heavy-duty pickup engineered for capability and comfort in Stephenville, TX. This AT4 trim pairs a powerful V8 diesel with a refined off-road package, delivering confident performance whether towing on the highway or tackling rough terrain. Exterior features include aggressive AT4 styling and rugged tires designed for durability, while the suspension and underbody protection enhance confidence off pavement. Inside, the cabin balances utility with modern technology. Stay connected with Apple CarPlay and Android Auto integration, and control audio functions easily through steering wheel audio controls. Safety systems such as lane departure warning provide an extra layer of awareness on long drives and worksites. Seating is crafted for support during extended drives, and practical storage solutions keep gear organized. Towing and hauling are simplified with heavy-duty components and engineered systems tailored to demanding tasks. The GMC Sierra 2500 AT4 includes advanced driver assistance features and a suite of convenience amenities that support both daily use and weekend adventures. Located in Stephenville, TX, this 2026 GMC Sierra 2500 AT4 4WD with the 6.6L V8 Diesel is ready to meet the needs of drivers who require serious capability, modern connectivity, and off-road readiness in a single, rugged package.
Equipment
See what's behind you with the back up camera on this model. An off-road package is equipped on this model. This model is equipped with the latest generation of XM/Sirius Radio. This 3/4 ton pickup features a hands-free Bluetooth phone system. This GMC Sierra offers Android Auto for seamless smartphone integration. Engulf yourself with the crystal clear sound of a BOSE sound system in this 3/4 ton pickup. Apple CarPlay: Seamless smartphone integration for it - stay connected and entertained on the go! The leather seats in the GMC Sierra are a must for buyers looking for comfort, durability, and style. This vehicle's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. It features steering wheel audio controls. It's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. Keep your hands warm all winter with a heated steering wheel in the GMC Sierra .
Packages
AT4 Premium Plus Package: Power Sunroof; Off-Road High Clearance Step; Technology Package; Power Sunroof; Technology Package; Power-Retractable Black Assist Steps. Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; 6.6L V8 with Direct Injection and Variable Valve Timing Engine; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Rear Wheelhouse Liners. AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote. Black Badging Package: Black Sierra Nameplates; Black GMC Emblems. 20" Aluminum High Gloss Black Wheels. Technology Package. Off-Road High Clearance Step. Power Sunroof. Body Color Wheel Arch Moldings. Wired Auxiliary Trailer Camera. Gooseneck/5th Wheel Prep Package. Coastal Dune. Hitch Package. Rear Underseat Storage. 3 Years SiriusXM. Cargo Tie-Down Rings (set of 4). LED Smoked Amber Roof Marker Lamps. Trailer Tire Pressure Monitor Sensors. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**
Features & Options
- AT4 Premium Plus Package: Power Sunroof; Off-Road High Clearance Step; Technology Package; Power Sunroof; Technology Package; Power-Retractable Black Assist Steps
- Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; 6.6L V8 with Direct Injection and Variable Valve Timing Engine; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Rear Wheelhouse Liners
- AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote
- Black Badging Package: Black Sierra Nameplates; Black GMC Emblems
- 20" Aluminum High Gloss Black Wheels
- Technology Package
- Off-Road High Clearance Step
- Power Sunroof
- Body Color Wheel Arch Moldings
- Wired Auxiliary Trailer Camera
- Gooseneck/5th Wheel Prep Package
- Coastal Dune
- Hitch Package
- Rear Underseat Storage
- 3 Years SiriusXM
- Cargo Tie-Down Rings (set of 4)
- LED Smoked Amber Roof Marker Lamps
- Trailer Tire Pressure Monitor Sensors
- Apple CarPlay/Android Auto smart device wireless mirroring
- Forward Collision Alert with Automatic Braking
- Front Pedestrian Braking
- Wi-Fi Hotspot capable mobile hotspot internet access
- HD Rear Vision Camera w/Hitch View rear mounted camera
- Adaptive cruise control
- Head-up display
- Automatic Emergency Braking predictive brake assist system
- Cruise control with steering wheel mounted controls
- Ventilated driver and front passenger seats
- Keyfob remote start
- Heated steering wheel
- Heated driver and front passenger seats
- Heated rear seats
- Leather front seat upholstery
- Primary monitor touchscreen
- Lane Departure Warning
- Rear Cross-Traffic Alert collision warning
- First-row sliding and tilting glass sunroof with express open/close activation sunshade
- Driver seat power reclining
- lumbar support
- cushion tilt
- fore/aft control and height adjustable control
- AutoTrac part and full-time 4WD
- Duramax 6.6L V-8 diesel direct injection
- intercooled turbo
- diesel
- engine with 470HP
- Duramax 6.6L V-8
- Front wireless smart device charging
- Google Built-In built-in virtual assistant
- Teen Driver restricted driving mode/alerts
- Auxiliary camera
- Keyless Open/Keyless Start with hands-free access and push button start
- Keyfob window control
- HD Surround Vision w/Hitch View aerial view camera
- Smart device remote start
- Push-button
- GCW Alert weight capacity alert
- Video-feed rearview mirror
- Stolen Vehicle Assistance vehicle tracker with vehicle slowdown
- Bluetooth wireless audio streaming
- Transparent Trailer View transparent trailer view
- Hitch Guidance vehicle to trailer hitching assist
- Gauge cluster display size: 12.30
- Front mounted camera with washer
- Right side camera
- Pickup box camera
- Left side camera
- Trailer Side Blind Zone Alert blind spot warning
- Following Distance Indicator
- Trailer tire pressure and temperature sensors
- Trailer light test
- Trailer light malfunction warning
- Trailer theft alarm
- Dual-zone front climate control
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